Filtering Molten Aluminum with a Ceramic Filter - FAIL 

"Try something new and fail quickly" sums up this experiment.
A while back I made ceramic sponges, and at the time I wondered if it could be used to filter molten metal. Commercial metal casting processes do use ceramic filters, so it's not a totally crazy idea.
I probably should have preheated the filters, but I ended up loosing interest after my first try. I don't regret the attempt though...
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